Tire-spreading tool



July 2, 1929. K. P. HUBBARD TIRE SPREADING TOOL 111196. June 20, 1928awn WWW/WWI ATTORNEYS Patented July 2, 1929.

UNITED STATES.

KITTY PKRKER HUBBARD, 0F NEWARK, NEW JERSEY.

TIRE-SPREADING TOOL.

Application filed June 20,

This invention relates in general to a tool for spreading the side wallsof a tire to perhill examination and repair of the interior of the tire.

One object of the invention is to provide a novel and in'iproved tool ofthis character which is adaptable for use with various sizes of tiresand can be utilized for spreading the walls of any given tire differentdistances apart as may be desired.

Other objects are to provide such a tool formed of one piece of sheetmaterial and so constructed as to be easily manipulated for spreadingthe tire walls; to provide a tire spreading tool. having at one edgethereof two series of teeth or projections, the teeth of said two seriesfacing in opposite directions, whereby the tool may be easily andquickly slipped over the edges of the sides of the tire and obtain afirm grip thereon; to provide a tool of this character in which theteeth are so shaped as to avoid any possibility of tearing or scrapingof the tire and to permit the tool to be easily slid circumferentiallyof the tire, and to obtain other advantages and results as will bebrought out by the following description.

Referring to the accompanying drawing, in which corresponding and likeparts throughout the several views are designated by the same referencecharacters:

Figure 1 is a side elevation of a tire tool embodying my inventionshowing the manner of using the same in spreading the wall of a tire.

Figure 2 is a top plan view thereof, the manner of applying the tool tothe tire being shown by dot and dash lines.

Figure 3 is an edge view of the bottom of the tool, and

Figure 4 is a transverse vertical sectional view taken on the line 4-4of Figure 1.

Specifically describing the illustrated embodiment of the invention, thereference character 1 designates a sheet or bar of suitable material,for instance aluminum, iron, etc, which preferably has one edge 2thereof substantially straight to serve as a straight edge or a ruler.The other edge of the bar is formed with two series 3 of teeth oralternate projections and notches. Preferably the teeth or projectionsin each series face in opposite directions and as shown each tooth hasthe side 4 thereof nearest the corresponding end of the barsubstantially straight and at right angles to the edge of the bar. The

1928. Serial No. 286,898.

top 5 of each tooth is preferably straight and flush with the edge ofthe bar, while the rear side 6 of the tooth is inclined inwardly awayfrom the straight side 4 and terminates in a substantially straightbottom or base 7 which separates the tooth from the next adjacent tooth.Preferably the rear side 6 of each tooth is inclined with respect to thesides of the bar to provide a clearance for applying the tool to a tireas hereinafter described. The innermost teeth of each series are mergedtogether into one large projection 8 at the center of the bar.

In use of the tool to spread the walls of a tire, one end of the bar isgrasped in one hand and the tire held in the other. The bar is then heldat an angle to the axis and transversely of the tire as shown by dot anddash lines in Figure 2, and the other end of the bar is applied to thetire so that the edge of one side wall of the tire is arranged betweentwo of the teeth 3. Thereupou the first mentioned end of the tool ispushed downwardly to grip the edge of the other side wall of the tirebetween two teeth and swung by the operator about the bearing point ofthe second-mentioned end of the tool on the first mentioned side of thetire, which causes a spreading of the tire wall. It will be understoodthat the edge of the tire wall will fit between two adjacent teeth, andthe inclined rear sides 6 of the teeth provide the necessary clearancefor the angular placement and swinging of the tool as above described.By grasping the bar at the center, it can be easily slidcircumferentially of the tire without detachment.

It will be understood from the foregoing that for different sizes oftires different teeth will be utilized, that is, for large size tiresthe outermost teeth will be engaged with the side walls, while for asmall tire the inner teeth will be use-d. In a similar manner differentteeth may be used for obtaining different degrees of spreading of thewalls of any given tire.

Preferably all corners or edges of the tool are rounded as indicated at9 to prevent scraping or tearing of a tire by the tool.

It will. be observed that the tool is extremely simple, being formed ofone piece of material and is adapted, without adjustment ormodification, for use with several different sizes of tires and toprovide different degrees of spreading of the tire walls. Furthermore,the tool can be easily operated by a relatively unskilled person, and isrelatively having a plurality of alternate recesses and projections torespectively receive and engage the side wallsof a tire to hold themspread apart, the inner sides of said projections be ing inclined withrespect to the sides of the bar'to provide a clearance for applying thev tool'to the edges ofthe tire walls.

2. A tire spreading tool comprising a bar having two series of teeth,the teeth of each series having the sides thereof nearest the ends ofthe bar disposed at substantially right anglesto the corresponding edgeof the bar and the inner sides thereof inclined inwardly from thecorresponding edge of the bar and side.

3. A tire spreading tool comprising a but having two series of teeth,the teeth of each series having the sides thereof nearest the ends ofthe bar disposed at substantially right angles to the corresponding edgeof the bar and the inner sides thereof inclined inwardly from thecorresponding edge of the bar and away from the correspondilnfirstmentioned side, said last-mentioned sides be- 30 ing also inclinedwith respect to the sides of the bar.

KITTY PARKER HUBBARD.

away from the corresponding first-mentioned 2

